| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 328217 |
2020-11-15T21:20:21 Z |
anishrajeev |
Mecho (IOI09_mecho) |
Java 11 |
|
1000 ms |
65536 KB |
import java.io.*;
import java.util.*;
public class mecho {
public static void main(String[] args) throws IOException {
BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
//BufferedReader bf = new BufferedReader(new FileReader("tester.in"));
PrintWriter pw = new PrintWriter(new OutputStreamWriter(System.out));
StringTokenizer stk = new StringTokenizer(bf.readLine());
int N = Integer.parseInt(stk.nextToken());
int S = Integer.parseInt(stk.nextToken());
String[][] grid = new String[N][N];
boolean[][] visited = new boolean[N][N];
LinkedList<pair> list = new LinkedList<>();
int[][] bees = new int[N][N];
int startx = 0, starty = 0, homex = 0, homey = 0;
for(int i = 0; i < N; i++){
String line = bf.readLine();
String[] str = line.split("");
Arrays.fill(bees[i], Integer.MAX_VALUE);
for(int c = 0; c < N; c++){
grid[i][c] = str[c];
if(grid[i][c].equals("H")){
list.add(new pair(i, c, 0));
visited[i][c] = true;
bees[i][c] = 0;
}
if(grid[i][c].equals("M")){
startx = i;
starty = c;
}
if(grid[i][c].equals("D")){
homex = i;
homey = c;
}
}
}
int[] dx = new int[]{0, 1, 0, -1};
int[] dy = new int[]{1, 0, -1, 0};
while(!list.isEmpty()){
pair p = list.pop();
if(p.x == homex && p.y == homey)continue;
if(grid[p.x][p.y].equals("T"))continue;
bees[p.x][p.y] = Math.min(bees[p.x][p.y], p.t+S);
for(int i = 0; i < 4; i++){
int nx = p.x+dx[i];
int ny = p.y+dy[i];
if(N <= nx || nx < 0 || N <= ny || ny < 0 || visited[nx][ny])continue;
list.add(new pair(nx, ny, bees[p.x][p.y]));
visited[nx][ny] = true;
}
}
bees[homex][homey] = Integer.MAX_VALUE;
int start = 0, end = 10000000;
while(start != end){
int mid = (start+end+1)/2;
if(verify(bees, grid, mid, startx, starty, homex, homey, N, S))start = mid;
else end = mid-1;
}
if(!verify(bees, grid, 0, startx, starty, homex, homey, N, S))System.out.println(-1);
else System.out.println(start);
}
public static boolean verify(int[][] bees, String[][] grid, int time, int startx, int starty, int homex, int homey, int N, int S){
LinkedList<pair> q = new LinkedList<>();
q.add(new pair(startx, starty, time*S));
int[] dx = new int[]{0, 1, 0, -1};
int[] dy = new int[]{1, 0, -1, 0};
boolean[][] visited = new boolean[N][N];
visited[startx][starty] = true;
while(!q.isEmpty()){
pair p = q.poll();
if(p.t >= bees[p.x][p.y])continue;
for(int i = 0; i < 4; i++){
int nx = p.x+dx[i];
int ny = p.y+dy[i];
if(N <= nx || nx < 0 || N <= ny || ny < 0)continue;
if(grid[nx][ny].equals("T")||grid[nx][ny].equals("H"))continue;
if(bees[nx][ny] <= p.t+1 || visited[nx][ny])continue;
q.add(new pair(nx, ny, p.t+1));
visited[nx][ny] = true;
}
}
if(visited[homex][homey]){
visited = null;
return true;
}
else{
visited = null;
return false;
}
}
public static class pair implements Comparable<pair>{
int x, y, t;
public pair(int a, int b, int c){
x = a;
y = b;
t = c;
}
@Override
public int compareTo(pair o) {
if(x==o.x&&y==o.y)return Integer.compare(t, o.t);
if(x==o.x)return Integer.compare(y, o.y);
return Integer.compare(x, o.x);
}
public boolean equals(pair o){
if(x == o.x && y == o.y && t == o.t)return true;
return false;
}
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
74 ms |
8824 KB |
Output is correct |
| 2 |
Correct |
74 ms |
8680 KB |
Output is correct |
| 3 |
Correct |
72 ms |
8556 KB |
Output is correct |
| 4 |
Correct |
73 ms |
8556 KB |
Output is correct |
| 5 |
Correct |
75 ms |
8668 KB |
Output is correct |
| 6 |
Correct |
76 ms |
8668 KB |
Output is correct |
| 7 |
Runtime error |
771 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 8 |
Correct |
81 ms |
8720 KB |
Output is correct |
| 9 |
Correct |
79 ms |
8684 KB |
Output is correct |
| 10 |
Correct |
77 ms |
8684 KB |
Output is correct |
| 11 |
Correct |
77 ms |
8684 KB |
Output is correct |
| 12 |
Correct |
114 ms |
9680 KB |
Output is correct |
| 13 |
Correct |
107 ms |
9452 KB |
Output is correct |
| 14 |
Correct |
176 ms |
11912 KB |
Output is correct |
| 15 |
Correct |
84 ms |
8688 KB |
Output is correct |
| 16 |
Correct |
81 ms |
8684 KB |
Output is correct |
| 17 |
Correct |
88 ms |
9180 KB |
Output is correct |
| 18 |
Correct |
95 ms |
9192 KB |
Output is correct |
| 19 |
Correct |
93 ms |
9196 KB |
Output is correct |
| 20 |
Correct |
96 ms |
9196 KB |
Output is correct |
| 21 |
Correct |
105 ms |
9440 KB |
Output is correct |
| 22 |
Correct |
101 ms |
9452 KB |
Output is correct |
| 23 |
Correct |
109 ms |
9580 KB |
Output is correct |
| 24 |
Correct |
118 ms |
9708 KB |
Output is correct |
| 25 |
Correct |
124 ms |
9832 KB |
Output is correct |
| 26 |
Correct |
148 ms |
11988 KB |
Output is correct |
| 27 |
Correct |
128 ms |
9964 KB |
Output is correct |
| 28 |
Correct |
183 ms |
12308 KB |
Output is correct |
| 29 |
Correct |
137 ms |
9964 KB |
Output is correct |
| 30 |
Correct |
190 ms |
12564 KB |
Output is correct |
| 31 |
Correct |
169 ms |
11860 KB |
Output is correct |
| 32 |
Correct |
164 ms |
12124 KB |
Output is correct |
| 33 |
Correct |
588 ms |
24840 KB |
Output is correct |
| 34 |
Correct |
705 ms |
24792 KB |
Output is correct |
| 35 |
Correct |
736 ms |
25792 KB |
Output is correct |
| 36 |
Correct |
537 ms |
26844 KB |
Output is correct |
| 37 |
Correct |
578 ms |
27128 KB |
Output is correct |
| 38 |
Correct |
786 ms |
28152 KB |
Output is correct |
| 39 |
Correct |
640 ms |
32864 KB |
Output is correct |
| 40 |
Correct |
765 ms |
33232 KB |
Output is correct |
| 41 |
Execution timed out |
1053 ms |
33692 KB |
Time limit exceeded |
| 42 |
Correct |
674 ms |
36780 KB |
Output is correct |
| 43 |
Correct |
761 ms |
37448 KB |
Output is correct |
| 44 |
Execution timed out |
1047 ms |
37724 KB |
Time limit exceeded |
| 45 |
Correct |
687 ms |
39140 KB |
Output is correct |
| 46 |
Correct |
780 ms |
39328 KB |
Output is correct |
| 47 |
Execution timed out |
1043 ms |
40360 KB |
Time limit exceeded |
| 48 |
Correct |
726 ms |
43520 KB |
Output is correct |
| 49 |
Correct |
791 ms |
43840 KB |
Output is correct |
| 50 |
Execution timed out |
1096 ms |
44780 KB |
Time limit exceeded |
| 51 |
Correct |
768 ms |
53092 KB |
Output is correct |
| 52 |
Correct |
867 ms |
53636 KB |
Output is correct |
| 53 |
Execution timed out |
1094 ms |
54892 KB |
Time limit exceeded |
| 54 |
Correct |
787 ms |
55832 KB |
Output is correct |
| 55 |
Correct |
873 ms |
56532 KB |
Output is correct |
| 56 |
Execution timed out |
1055 ms |
57584 KB |
Time limit exceeded |
| 57 |
Correct |
806 ms |
61136 KB |
Output is correct |
| 58 |
Correct |
916 ms |
61544 KB |
Output is correct |
| 59 |
Execution timed out |
1088 ms |
62184 KB |
Time limit exceeded |
| 60 |
Runtime error |
662 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 61 |
Runtime error |
698 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 62 |
Runtime error |
656 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 63 |
Runtime error |
722 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 64 |
Runtime error |
732 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 65 |
Runtime error |
732 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 66 |
Runtime error |
744 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 67 |
Runtime error |
707 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 68 |
Runtime error |
821 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 69 |
Runtime error |
822 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 70 |
Runtime error |
833 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 71 |
Runtime error |
836 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 72 |
Runtime error |
829 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 73 |
Runtime error |
703 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 74 |
Runtime error |
704 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 75 |
Runtime error |
696 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 76 |
Runtime error |
698 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 77 |
Runtime error |
692 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 78 |
Runtime error |
764 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 79 |
Runtime error |
756 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 80 |
Runtime error |
755 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 81 |
Runtime error |
769 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 82 |
Runtime error |
766 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 83 |
Runtime error |
744 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 84 |
Runtime error |
767 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 85 |
Runtime error |
759 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 86 |
Runtime error |
702 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 87 |
Runtime error |
760 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 88 |
Runtime error |
755 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 89 |
Runtime error |
752 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 90 |
Runtime error |
752 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 91 |
Runtime error |
755 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 92 |
Runtime error |
759 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
